Home / 2,132.59-2,942.94-1,188.35

Finding the Fourth Proportional to 2,132.59, 2,942.94 and 1,188.35

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Solution

The fourth proportional to 2,132.59, 2,942.94 and 1,188.35 is: 1,639.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,132.59 : 2,942.94 = 1,188.35 : x
  2. Step 2: Convert to fraction form
    2,132.59/2,942.94 = 1,188.35/x
  3. Step 3: Cross multiply
    2,132.59x = 2,942.94 × 1,188.35
  4. Step 4: Simplify right side
    2,132.59x = 3,497,242.75
  5. Step 5: Solve for x
    x = 3,497,242.75/2,132.59
  6. Step 6: Final answer
    x = 1,639.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.